{
  config,
  pkgs,
  lib,
  ...
}:
let
  cfg = config.programs.matugen;
in
{
  # https://github.com/Theaninova/matugen/blob/add-home-manager-module/hm-module.nix
  options.programs.matugen =
    with lib;
    with types;
    {
      enable = mkEnableOption "matugen";
      package = mkPackageOption pkgs "matugen" { };
      settings = mkOption {
        type = attrsOf anything;
        description = "Settings to write to config.toml.";
      };
    };

  config = lib.mkIf cfg.enable {
    home.packages = [ cfg.package ];
    xdg.configFile."matugen/config.toml".source = lib.mkIf (cfg.settings != null) (
      (pkgs.formats.toml { }).generate "matugen" cfg.settings
    );
  };
}